Influence of plasma screening on high-density inverse bremsstrahlung absorption
A spherical-implosion platform diagnosed with the "beamlets" scattered-light detector provides high sensitivity to the impact of plasma screening on inverse bremsstrahlung absorption. Contrary to the more restrictive screening length suggested previously [D. Turnbull et al., Phys. Rev. Lett. 130, 145103 (2023)0031-900710.1103/PhysRevLett.130.145103; D. Turnbull et al., Phys. Plasmas 31, 063304 (2024)1070-664X10.1063/5.0203446], the beamlets data indicate that the electron-only Debye length is the relevant screening length for high-density inverse bremsstrahlung absorption. Using the updated absorption model, we simulate the OMEGA direct-drive inertial confinement fusion implosion database and show that bang times are well reproduced without any ad hoc multipliers.
Authors
- J. Katz (ORCID: https://orcid.org/0000-0002-4732-6206)
- R. K. Follett (ORCID: https://orcid.org/0000-0002-1632-606X)
- M. Sherlock (ORCID: https://orcid.org/0000-0001-8098-5732)
- D. Turnbull (ORCID: https://orcid.org/0000-0002-9887-1028)
- Nathaniel R. Shaffer (ORCID: https://orcid.org/0000-0002-0710-0026)
- D. H. Edgell
- Liam Stanton (ORCID: https://orcid.org/0000-0001-8413-6682)
- D. Cao (ORCID: https://orcid.org/0000-0003-1085-2322)
- D. H. Froula (ORCID: https://orcid.org/0000-0001-6981-3956)
- D. J. Strozzi (ORCID: https://orcid.org/0000-0001-8814-3791)
- K. Aytekin
Institutions
- Lawrence Livermore National Laboratory (US)
- Energetics (United States) (US)
- San Jose State University (US)
- University of Rochester (US)
Publication Details
- Journal
- Physical review. E
- Published
- 2025-06-09
- DOI
- https://doi.org/10.1103/physreve.111.065206
- Primary Topic
- Laser-Plasma Interactions and Diagnostics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- U.S. Department of Energy
- National Nuclear Security Administration